There is also a bug in the LCDPrint example
Examples->Robot Control->learn->LCDPrint
Robot.fill(0, 255, 0);
Robot.textSize(1);
Robot.text(value, 0, 0);
delay(500);
// erase the previous text on the screen
Robot.fill(255, 255, 255);
Robot.textSize(1);
Robot.text(value, 0, 0);
should be
Robot.stroke(0, 0, 0); // or whatever colour you want
Robot.textSize(1);
Robot.text(value, 0, 0);
delay(500);
// erase the previous text on the screen
Robot.stroke(255, 255, 255);
Robot.textSize(1);
Robot.text(value, 0, 0);